Taishiro Sonae Posted over 1 year ago How many languages should we learn in bussiness? which one we must have to learn? In a response to your question, I think that there is no such a language we should or must learn. It is all up to exactly what you want to do in your life. Generally speaking,the more language we know, the more opportunity we can possibly get in business.So I think it is better for everyone to be encouraged to learn many languages but not being forced by anyone. I would like to suggest that you make sure exactly what you would like to do from now, and then decide the language you are going to learn.